SetLength申请的内存如何释放？

[zhourongbiao]

用什么函数？

[delphfan]

用动态数组,最终把数组释放就好了

[hjf8086]

自动释放

[q_qi2001]

用Free方法

[何鲁青]

不用自己释放的
procedure TForm1.Button1Click(Sender: TObject);
var arr:array of Char;
begin
setlength(arr,10);//申请内存
setlength(arr,0);//这里申请的内存被自动释放了
arr:=nil;//释放arr
end;

[何鲁青]

不会出现内存泄漏，所以不用担心什么...

[happy00]

delphi will free memory automatically

[gwolf]

不需要显式释放

[zhouhaijun2]

freeandnil()

[ly_liuyang]

Setlength中，0参数就是

http://lysoft.7u7.net

[xwhope]

delphi will free memory automatically

[xwhope]

Delphi syntax:

procedure SetLength(var S; NewLength: Integer);

Description

S is a Delphi string or dynamic-array variable.

NewLength is the new number of characters or elements in S.

For a short-string variable, SetLength simply sets the length-indicator character (the character at S[0]) to the given value. In this case, NewLength must be a value between 0 and 255.

For a long-string or dynamic-array variable, SetLength reallocates the string or array referenced by S to the given length. Existing characters in the string or elements in the array are preserved, but the content of newly allocated space is undefined. The one exception is when increasing the length of a dynamic array in which the elements are types that must be initialized (strings, Variants, Variant arrays, or records that contain such types). When S is a dynamic array of types that must be initialized, newly allocated space is set to 0 or nil.

For dynamic arrays, SetLength may take more than one length parameter (up to the number of array dimensions). Each parameter specifies the number of elements along a particular dimension.

Following a call to SetLength, S is guaranteed to reference a unique string or array梩hat is, a string or array with a reference count of one. If there is not enough memory available to reallocate the variable, SetLength raises an EOutOfMemory exception.